Pet drinking fountain design



FIG. 1 is a perspective view of a pet drinking fountain embodying my invention;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a right side elevation view thereof the left side elevation view being a mirror image thereof;

FIG. 4 is a rear elevation view thereof; and,

FIG. 5 is a top plan view thereof. 

The ornamental design for a pet drinking fountain design, as shown and decribed. 